Among other coins, Brasil is commemorating the 2016 Olympic Games in Rio de Janeiro with a series of commemorative circulation 1 Real coins.
It began in 2012 with ''Olympic Flag Handover.''
In 2014, the main series began. It will end in 2016. There will be sixteen 1 Real coins depicting different Olympic and Paralymic sports. The 1 Real CC are being issued in groups of four coins ( August 2014, February and August 2015, February 2016). 
Considering that Brasil has been very frugal in issuing commemorative circulation coins during the last 20 years this is a major undertaking.
In 2015, there also was a 1 Real CC commemorating the 50th Anniversary of Brasil's central bank. 
All 1 Real coins have the same obverse (or reverse, depending on your point of view what is what).
Here are the pictures...